dpeq.marshalling

Members

Aliases

VariantDemarshaller

alias VariantDemarshaller = NullableVariant function(const(ubyte)[] buf, in FormatCode fc, in int len)

prototype of a nullable variant demarshaller, used in converter

Classes

VariantConverter

class VariantConverter(alias Marsh = DefaultFieldMarshaller)

Default converter hash map. You can extend it, or define your own.

Functions

demarshalFixedField

T demarshalFixedField(const(ubyte)[] from, FormatCode fCode, int len)

Undocumented in source. Be warned that the author may not have intended to support it.

demarshalNullableFixedField

Nullable!T demarshalNullableFixedField(const(ubyte)[] from, FormatCode fCode, int len)

Undocumented in source. Be warned that the author may not have intended to support it.

demarshalNullableStringField

Nullable!string demarshalNullableStringField(const(ubyte)[] from, FormatCode fc, int len)

returns inplace-constructed string without allocations. Hacky.

demarshalNullableUuidField

Nullable!UUID demarshalNullableUuidField(const(ubyte)[] from, FormatCode fc, int len)

Undocumented in source. Be warned that the author may not have intended to support it.

demarshalNumber

T demarshalNumber(const(ubyte)[] from)

Simple demarshal of some numeric type.

demarshalProtocolString

string demarshalProtocolString(const(ubyte)[] from, size_t length)

dpeq utility function. Demarshal zero-terminated string from byte buffer.

demarshalString

string demarshalString(const(ubyte)[] from)

dpeq utility function

demarshalStringField

string demarshalStringField(const(ubyte)[] from, FormatCode fc, int len)

Undocumented in source. Be warned that the author may not have intended to support it.

demarshalUuidField

UUID demarshalUuidField(const(ubyte)[] from, FormatCode fc, int len)

Undocumented in source. Be warned that the author may not have intended to support it.

marshalCstring

int marshalCstring(ubyte[] to, string s)

Service function, used for marshalling of protocol messages. Data strings are passed without trailing nulls.

marshalFixedField

int marshalFixedField(ubyte[] to, T val)

Undocumented in source. Be warned that the author may not have intended to support it.

marshalNull

int marshalNull(ubyte[] to)

Undocumented in source. Be warned that the author may not have intended to support it.

marshalNullableFixedField

int marshalNullableFixedField(ubyte[] to, Nullable!T ptr)

Undocumented in source. Be warned that the author may not have intended to support it.

marshalNullableStringField

int marshalNullableStringField(ubyte[] to, Nullable!string val)

Undocumented in source. Be warned that the author may not have intended to support it.

marshalNullableUuidField

int marshalNullableUuidField(ubyte[] to, Nullable!UUID val)

Undocumented in source. Be warned that the author may not have intended to support it.

marshalStringField

int marshalStringField(ubyte[] to, string s)

Undocumented in source. Be warned that the author may not have intended to support it.

marshalUuidField

int marshalUuidField(ubyte[] to, UUID val)

Undocumented in source. Be warned that the author may not have intended to support it.

to

bool to(string s)

psql uses t and f for boolean

wrapToVariant

NullableVariant wrapToVariant(const(ubyte)[] buf, FormatCode fc, int len)

Undocumented in source. Be warned that the author may not have intended to support it.

Mixin templates

MarshTemplate

mixintemplate MarshTemplate(NativeT, FormatCode fcode, string suffix)

Undocumented in source.

Structs

FieldSpec

struct FieldSpec

Value type descriptor, constisting of an oid of the type itself and a boolean flag wich indicates wether the value can be null.

NullableVariant

struct NullableVariant

std.variant.Variant subtype that is better suited for holding SQL null. Null NullableVariant is essentially a valueless Variant instance.

Templates

DefaultFieldMarshaller

template DefaultFieldMarshaller(FieldSpec field, alias Pre = NopMarshaller, alias Post = PromiscuousStringMarshaller)

Default compile-time one-to-many mapper, wich for ObjectID of some Postgress type gives it's native type representation, and marshalling and demarshalling functions. You can extend it with two custom mappers: Pre and Post.

FCodeOfFSpec

template FCodeOfFSpec(alias Marsh = DefaultFieldMarshaller)

Undocumented in source.

FSpecsToFCodes

template FSpecsToFCodes(FieldSpec[] specs, alias Marsh = DefaultFieldMarshaller)

Utility template to quickly get an array of format codes from an array of FieldSpecs

NopMarshaller

template NopMarshaller(FieldSpec type)

Can't marshal shit

PromiscuousStringMarshaller

template PromiscuousStringMarshaller(FieldSpec field)

This is a fallback marshaller that simply accepts any type as a string

StaticFieldMarshaller

template StaticFieldMarshaller(FieldSpec field)

Types handled by dpeq natively

• command
• connection
• constants
• exceptions
• marshalling
• schema